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  <ul class="layui-menu layui-menu-lg ws-docs-menu">
    <li class="layui-menu-item-group" lay-options="{type: 'group', isAllowSpread: true}">
      <div class="layui-menu-body-title">基础</div>
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        <li>
          <div class="layui-menu-body-title">
            <a href="../index.html">
              <span>开始使用</span> 
              <span class="layui-font-12 layui-font-gray">Getting Started</span>
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            </a>
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      <div class="layui-menu-body-title">通用</div>
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        <li>
          <div class="layui-menu-body-title">
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              <span>颜色</span>
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              <span class="layui-font-12 layui-font-gray">Button</span>
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              <span>动画</span>
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              <span>输入框</span>
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              <span>选择框</span>
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            </a>
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            <a href="../form/checkbox.html">
              <span>复选框</span>
              <span class="layui-font-12 layui-font-gray">Checkbox</span>
            </a>
          </div>
        </li>
        <li>
          <div class="layui-menu-body-title">
            <a href="../form/radio.html">
              <span>单选框</span>
              <span class="layui-font-12 layui-font-gray">Radio</span>
            </a>
          </div>
        </li>
      </ul>
    </li>
    <li class="layui-menu-item-group" lay-options="{type: 'group', isAllowSpread: true}">
      <div class="layui-menu-body-title">展示</div>
      <ul>
        <li>
          <div class="layui-menu-body-title">
            <a href="../table/index.html">
              <span>表格</span>
              <span class="layui-font-12 layui-font-gray">Table</span>
              <span class="layui-badge-dot layui-bg-green"></span>
            </a>
          </div>
        </li>
        <li>
          <div class="layui-menu-body-title">
            <a href="../laypage/index.html">
              <span>分页</span>
              <span class="layui-font-12 layui-font-gray">Laypage</span>
            </a>
          </div>
        </li>
        <li>
          <div class="layui-menu-body-title">
            <a href="../treeTable/index.html">
              <span>树形表格</span>
              <span class="layui-font-12 layui-font-gray">TreeTable</span>
            </a>
          </div>
        </li>
        <li>
          <div class="layui-menu-body-title">
            <a href="../nav/index.html">
              <span>导航菜单</span>
              <span class="layui-font-12 layui-font-gray">Nav</span>
            </a>
          </div>
        </li>
        <li>
          <div class="layui-menu-body-title">
            <a href="index.html">
              <span>基础菜单</span>
              <span class="layui-font-12 layui-font-gray">Menu</span>
            </a>
          </div>
        </li>
        <li>
          <div class="layui-menu-body-title">
            <a href="../tab/index.html">
              <span>选项卡</span>
              <span class="layui-font-12 layui-font-gray">Tab</span>
            </a>
          </div>
        </li>
        <li>
          <div class="layui-menu-body-title">
            <a href="../badge/index.html">
              <span>徽章</span>
              <span class="layui-font-12 layui-font-gray">Badge</span>
            </a>
          </div>
        </li>
        <li>
          <div class="layui-menu-body-title">
            <a href="../auxiliar/index.html">
              <span>辅助</span>
              <span class="layui-font-12 layui-font-gray">Blockquote / Fieldset / hr</span>
            </a>
          </div>
        </li>
        <li>
          <div class="layui-menu-body-title">
            <a href="../class/index.html">
              <span>公共类</span>
              <span class="layui-font-12 layui-font-gray">Class</span>
            </a>
          </div>
        </li>
        <li>
          <div class="layui-menu-body-title">
            <a href="../panel/index.html">
              <span>面板</span>
              <span class="layui-font-12 layui-font-gray">Panel / Card / Collapse</span>
            </a>
          </div>
        </li>
        <li>
          <div class="layui-menu-body-title">
            <a href="../progress/index.html">
              <span>进度条</span>
              <span class="layui-font-12 layui-font-gray">Progress</span>
            </a>
          </div>
        </li>
        <li>
          <div class="layui-menu-body-title">
            <a href="../timeline/index.html">
              <span>时间线</span>
              <span class="layui-font-12 layui-font-gray">Timeline</span>
            </a>
          </div>
        </li>
        <li>
          <div class="layui-menu-body-title">
            <a href="../fixbar/index.html">
              <span>固定条</span>
              <span class="layui-font-12 layui-font-gray">Fixbar</span>
            </a>
          </div>
        </li>
        <li>
          <div class="layui-menu-body-title">
            <a href="../tree/index.html">
              <span>树组件</span>
              <span class="layui-font-12 layui-font-gray">Tree</span>
            </a>
          </div>
        </li>
        <li>
          <div class="layui-menu-body-title">
            <a href="../carousel/index.html">
              <span>轮播</span>
              <span class="layui-font-12 layui-font-gray">Carousel</span>
            </a>
          </div>
        </li>
        <li>
          <div class="layui-menu-body-title">
            <a href="../flow/index.html">
              <span>流加载</span>
              <span class="layui-font-12 layui-font-gray">Flow</span>
            </a>
          </div>
        </li>
        <li>
          <div class="layui-menu-body-title">
            <a href="../code/index.html">
              <span>代码预览组件</span>
              <span class="layui-font-12 layui-font-gray">Code</span>
            </a>
          </div>
        </li>
      </ul>
    </li>
    <li class="layui-menu-item-group" lay-options="{type: 'group', isAllowSpread: true}">
      <div class="layui-menu-body-title">交互</div>
      <ul>
        <li>
          <div class="layui-menu-body-title">
            <a href="../layer/index.html">
              <span>弹出层</span>
              <span class="layui-font-12 layui-font-gray">Layer</span>
              <span class="layui-badge-dot layui-bg-green"></span>
            </a>
          </div>
        </li>
        <li>
          <div class="layui-menu-body-title">
            <a href="../laydate/index.html">
              <span>日期与时间选择</span>
              <span class="layui-font-12 layui-font-gray">Laydate</span>
            </a>
          </div>
        </li>
        <li>
          <div class="layui-menu-body-title">
            <a href="../upload/index.html">
              <span>上传</span>
              <span class="layui-font-12 layui-font-gray">Upload</span>
            </a>
          </div>
        </li>
        <li>
          <div class="layui-menu-body-title">
            <a href="../dropdown/index.html">
              <span>下拉菜单</span>
              <span class="layui-font-12 layui-font-gray">Dropdown</span>
            </a>
          </div>
        </li>
        <li>
          <div class="layui-menu-body-title">
            <a href="../colorpicker/index.html">
              <span>颜色选择器</span>
              <span class="layui-font-12 layui-font-gray">Colorpicker</span>
            </a>
          </div>
        </li>
        <li>
          <div class="layui-menu-body-title">
            <a href="../transfer/index.html">
              <span>穿梭框</span>
              <span class="layui-font-12 layui-font-gray">Transfer</span>
            </a>
          </div>
        </li>
        <li>
          <div class="layui-menu-body-title">
            <a href="../slider/index.html">
              <span>滑块</span>
              <span class="layui-font-12 layui-font-gray">Slider</span>
            </a>
          </div>
        </li>
        <li>
          <div class="layui-menu-body-title">
            <a href="../rate/index.html">
              <span>评分</span>
              <span class="layui-font-12 layui-font-gray">Rate</span>
            </a>
          </div>
        </li>
      </ul>
    </li>
    <li class="layui-menu-item-group" lay-options="{type: 'group', isAllowSpread: true}">
      <div class="layui-menu-body-title">其他</div>
      <ul>
        <li>
          <div class="layui-menu-body-title">
            <a href="../laytpl/index.html">
              <span>模板引擎</span>
              <span class="layui-font-12 layui-font-gray">Laytpl</span>
            </a>
          </div>
        </li>
        <li>
          <div class="layui-menu-body-title">
            <a href="../util/index.html">
              <span>工具模块</span>
              <span class="layui-font-12 layui-font-gray">Util</span>
            </a>
          </div>
        </li>
      </ul>
    </li>
    
  </ul>
</div>

  <div class="ws-content">
    <div class="layui-text ws-text" id="WS-text">
      <h1>基础菜单</h1>
<blockquote class="layui-elem-quote">
<p>基础菜单 <code>menu</code> 是垂直导航菜单的另一个替代方案，它是基于 <code>dropdown</code> 组件驱动的静态元素结构。</p>
</blockquote class="layui-elem-quote">
<h2 id="examples" lay-toc="{hot: true}" style="margin-bottom: 0;">示例</h2>
<pre class="layui-code" lay-options="{preview: 'iframe', style: 'height: 535px;', layout: ['preview', 'code'], tools: ['full', 'window']}">
  <textarea>
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>基础菜单 - Layui</title>
  <meta name="renderer" content="webkit">
  <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.staticfile.org/layui/2.8.6/css/layui.css" rel="stylesheet">
</head>
<body class="layui-bg-gray">
<div class="layui-panel" style="width: 260px; margin: 16px;">
  <ul class="layui-menu" id="demo-menu">
    <li lay-options="{id: 100}">
      <div class="layui-menu-body-title"><a href="javascript:;">menu item 1</a></div>
    </li>
    <li lay-options="{id: 101}">
      <div class="layui-menu-body-title">
        <a href="javascript:;">menu item 2 <span class="layui-badge-dot"></span></a>
      </div>
    </li>
    <li class="layui-menu-item-divider"></li>
    <li class="layui-menu-item-group layui-menu-item-down" lay-options="{type: 'group'}">
      <div class="layui-menu-body-title">
        menu group <i class="layui-icon layui-icon-up"></i>
      </div>
      <ul>
        <li lay-options="{id: 103}">
          <div class="layui-menu-body-title">menu item 3-1</div>
        </li>
        <li class="layui-menu-item-group" lay-options="{type: 'group', isAllowSpread: false}">
          <div class="layui-menu-body-title">menu group 2</div>
          <ul>
            <li class="layui-menu-item-checked">
              <div class="layui-menu-body-title">menu item 3-2-1</div>
            </li>
            <li><div class="layui-menu-body-title">menu item 3-2-2</div></li>
          </ul>
        </li>
        <li><div class="layui-menu-body-title">menu item 3-3</div></li>
      </ul>
    </li>
    <li class="layui-menu-item-divider"></li>
    <li><div class="layui-menu-body-title">menu item 4 <span class="layui-badge">1</span></div></li>
    <li><div class="layui-menu-body-title">menu item 5</div></li>
    <li><div class="layui-menu-body-title">menu item 6</div></li>
    <li class="layui-menu-item-parent" lay-options="{type: 'parent'}">
      <div class="layui-menu-body-title">
        menu item 7 Children
        <i class="layui-icon layui-icon-right"></i>
      </div>
      <div class="layui-panel layui-menu-body-panel">
        <ul>
          <li class="layui-menu-item-parent" lay-options="{type: 'parent'}">
            <div class="layui-menu-body-title">
              menu item 7-1
              <i class="layui-icon layui-icon-right"></i>
            </div>
            <div class="layui-panel layui-menu-body-panel">
              <ul>
                <li><div class="layui-menu-body-title">menu item 7-2-1</div></li>
                <li><div class="layui-menu-body-title">menu item 7-2-2</div></li>
                <li><div class="layui-menu-body-title">menu item 7-2-3</div></li>
                <li><div class="layui-menu-body-title">menu item 7-2-4</div></li>
              </ul>
            </div>
          </li>
          <li><div class="layui-menu-body-title">menu item 7-2</div></li>
          <li><div class="layui-menu-body-title">menu item 7-3</div></li>
        </ul>
      </div>
    </li>
    <li>menu item 8</li>
    <li class="layui-menu-item-divider"></li>
    <li class="layui-menu-item-group" lay-options="{type: 'group', isAllowSpread: false}">
      <div class="layui-menu-body-title">menu group 9</div>
      <ul>
        <li><div class="layui-menu-body-title">menu item 9-1</div></li>
        <li class="layui-menu-item-parent" lay-options="{type: 'parent'}">
          <div class="layui-menu-body-title">
            menu item 9-2
            <i class="layui-icon layui-icon-right"></i>
          </div>
          <div class="layui-panel layui-menu-body-panel">
            <ul>
              <li><div class="layui-menu-body-title">menu item 9-2-1</div></li>
              <li><div class="layui-menu-body-title">menu item 9-2-2</div></li>
              <li><div class="layui-menu-body-title">menu item 9-2-3</div></li>
            </ul>
          </div>
        </li>
        <li><div class="layui-menu-body-title">menu item 9-31</div></li>
      </ul>
    </li>
    <li class="layui-menu-item-divider"></li>
    <li><div class="layui-menu-body-title">menu item 10</div></li>
  </ul>
</div>
<script src="https://cdn.staticfile.org/layui/2.8.6/layui.js"></script>
<script>
layui.use(function(){
  var dropdown = layui.dropdown;
  var layer = layui.layer;
  var util = layui.util;
  // 菜单点击事件
  dropdown.on('click(demo-menu)', function(options){
    console.log(this, options);
    
    // 显示 - 仅用于演示
    layer.msg(util.escape(JSON.stringify(options)));
  });
});
</script>
</body>
</html>
  </textarea>
</pre>
<h2 id="layout" lay-toc="{}">结构</h2>
<p>基础菜单层级与样式结构如下：</p>
<ul>
<li>通过 <code>&lt;ul class=&quot;layui-menu&quot;&gt;&lt;/ul&gt;</code> 命名基础菜单容器
<ul>
<li>追加 <code>className</code> 为 <code>layui-menu-lg</code> 可设置基础菜单的大尺寸风格</li>
<li>通过 <code>&lt;li&gt;&lt;/li&gt;</code> 放置菜单列表项
<ul>
<li>属性：
<ul>
<li>追加 <code>className</code> 为　<code>layui-menu-item-group</code> 可设置当前菜单为菜单组，即子菜单为纵向层级。</li>
<li>或追加 <code>className</code> 为 <code>layui-menu-item-parent</code> 可这支当前菜单为父级菜单，即子菜单为横向层级。</li>
<li>追加 <code>className</code> 为 <code>layui-menu-item-divider</code> 可设置分隔线。</li>
<li>追加 <code>className</code> 为 <code>layui-menu-item-up</code> 或 <code>layui-menu-item-down</code> 可设置子菜单默认收缩或展开。</li>
<li>追加 <code>className</code> 为 <code>layui-menu-item-checked</code> 可设置当前菜单为选中状态</li>
<li>添加 <code>lay-options=&quot;{}&quot;</code> 可设置对应菜单列表的基础属性</li>
</ul>
</li>
<li>内容：
<ul>
<li>通过 <code>&lt;div class=&quot;layui-menu-body-title&quot;&gt;&lt;/div&gt;</code> 放置菜单标题容器</li>
<li>通过 <code>&lt;div class=&quot;layui-panel layui-menu-body-panel&quot;&gt;&lt;/div&gt;</code> 放置横向子菜单外层面板</li>
<li>通过 <code>&lt;ul&gt;&lt;li&gt;&lt;/li&gt;&lt;/ul&gt;</code> 放置子菜单列表，其中 <code>&lt;li&gt;</code> 中的规则同父级。</li>
</ul>
</li>
</ul>
</li>
</ul>
</li>
<li>再将基础菜单放置在一个面板容器中，以更好地定义尺寸、边框或阴影等外观，详细可参考上述示例。</li>
</ul>
<h2 id="options" lay-toc="{}">属性</h2>
<p>属性即命名在基础菜单列表元素 <code>&lt;li&gt;&lt;/li&gt;</code> 中的 <code>lay-options</code> 属性值，如：<code>&lt;li lay-options=&quot;{type: 'parent'}&quot;&gt;&lt;/li&gt;</code>，其支持的属性如下：</p>
<table class="layui-table">
<thead>
<tr>
<th>属性</th>
<th>描述</th>
</tr>
</thead>
<tbody>
<tr>
<td>title</td>
<td>设置菜单标题。默认读取标题容器内容中的文本。</td>
</tr>
<tr>
<td>type</td>
<td>设置菜单类型。可选值如下：<ul><li>若不设定，则表示为常规菜单项</li><li><code>type:'group'</code> 菜单组，子菜单为纵向层级</li><li><code>type:'parent'</code> 父级菜单，子菜单为横向层级</li></ul></td>
</tr>
<tr>
<td>isAllowSpread</td>
<td>子菜单是否允许展开收缩操作。默认 <code>true</code></td>
</tr>
</tbody>
</table class="layui-table">
<h3 id="on" lay-toc="{}" class="ws-bold">事件</h3>
<p><code>dropdown.on('click(filter)', callback)</code></p>
<ul>
<li>参数 <code>click(filter)</code> 是一个特定结构。
<ul>
<li><code>click</code> 为基础菜单项点击事件固定值；</li>
<li><code>filter</code> 为基础菜单容器属性 <code>lay-filter</code> 对应的值。</li>
</ul>
</li>
<li>参数 <code>callback</code> 为事件执行时的回调函数，并返回一个 object 类型的参数。</li>
</ul>
<p>点击菜单列表项时触发。用法：<a href="index.html#examples">#详见示例</a></p>
<h2>贴士</h2>
<p>基础菜单相当于是 <code>dropdown</code> 组件的一种静态化呈现，因此在事件等动态操作上需借助 <code>dropdown</code> 组件的 API 来完成。</p>

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